javacommons/fileutils/src.s60/filedrmcontenthandler.h
changeset 21 2a9601315dfc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javacommons/fileutils/src.s60/filedrmcontenthandler.h	Mon May 03 12:27:20 2010 +0300
@@ -0,0 +1,156 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Handler for DRM File IO Operations
+ *
+*/
+
+
+#ifndef FILEDRMCONTENTHANDLER_H
+#define FILEDRMCONTENTHANDLER_H
+
+#include <caf/caf.h>
+#include <caf/content.h>
+#include <caf/data.h>
+#include <caf/rightsmanager.h>
+
+#include "nativefileiohandler.h"
+
+namespace java
+{
+namespace util
+{
+class FunctionServer;
+}
+
+namespace fileutils
+{
+
+OS_NONSHARABLE_CLASS(FileDRMContentHandler): public NativeFileIOHandler
+{
+public:
+    /**
+     * Checks to see if the specified file is DRM protected or not.
+     */
+    static TBool isDRMProtectedFile(const TDesC& aFullName);
+
+    /**
+     * Maps Java side intent to native intent type
+     */
+    static ContentAccess::TIntent mapIntentToCAF(TInt aIntent);
+
+    /**
+     * Sets the DRM arguments.
+     */
+    void setDrmArguments(TInt aIntent, TBool aExecuteIntent);
+
+    FileDRMContentHandler(const std::wstring aName);
+
+    virtual ~FileDRMContentHandler();
+
+    // Methods fron NativeFileIOHandler
+
+    /**
+     * Reads data from the file into aBuffer upto aLength bytes.
+     * Returns the amount of data read.
+     * In case of errors, exception is thrown with errno value.
+     */
+    virtual int readBytes(char* aBuffer, int aLength);
+
+    /**
+     * Writes data from aBuffer into the file upto aLength bytes.
+     * Returns the amount of data written.
+     * In case of errors, exception is thrown with errno value.
+     */
+    virtual int writeBytes(char* aBuffer, int aLength);
+
+    /**
+     * Stops read operation. In case the file is opened in read-write mode and
+     * if the write operations are in progress, the file is kept open to allow
+     * for write operations. Else the file is closed.
+     */
+    virtual void stopReading();
+
+    /**
+     * Stops write operation. In case the file is opened in read-write mode and
+     * if the read operations are in progress, the file is kept open to allow
+     * for read operations. Else the file is closed.
+     */
+    virtual void stopWriting();
+
+    /**
+     * Opens the file specified during the construction of the object for read
+     * operations.
+     */
+    virtual void openForReading();
+
+    /**
+     * Opens the file specified during the construction of the object for write
+     * operations.
+     */
+    virtual void openForWriting(const long aOffset);
+
+    /**
+     * Skips aOffset number of bytes.
+     * Positive value of aOffset moves the position forward and negatve backwards.
+     * Return value is the actual value that can be skipped.
+     */
+    virtual long skip(const long aOffset);
+
+    /**
+     * Closes the file descriptors but will not delete all data.
+     * On next call to read or write, we continue from previous offset.
+     */
+    virtual void closeFileToReopen();
+
+    /**
+     * Returns the amount of data available in the file from current read offset.
+     */
+    virtual long available();
+
+    /**
+     * Skips aOffset number of bytes.
+     * Positive value of aOffset moves the position forward and negatve backwards.
+     * To be called in Function Server context.
+     * Return value is the actual value that can be skipped.
+     */
+    long skipFs(const long aOffset);
+
+    /**
+     * Reads data from the file into aBuffer upto aLength bytes.
+     * Returns the amount of data read.
+     * To be called in FunctionServer Context.
+     * In case of errors, exception is thrown with errno value.
+     */
+    int readBytesFs(char* aBuffer, int aLength);
+
+private:
+    virtual void handleReopenCase();
+
+    void initializeAndOpenL();
+
+    void clearContent();
+private:
+    ContentAccess::CContent *mContent;
+    ContentAccess::CData *mData;
+    ContentAccess::TIntent mDrmIntent;
+
+    java::util::FunctionServer* mFunctionServer;
+    TInt mReadPosition;
+    TBool mExecuteIntent;
+};
+
+}
+}
+
+#endif // FILEDRMCONTENTHANDLER_H